// This structure has to match the 'struct tm'
// defined in time.h of POSIX.
Timestamp :: struct #size (sizeof u32 * 12) {
- sec: u32;
- min: u32;
- hour: u32;
- mday: u32;
- mon: u32;
- year: u32;
- wday: u32;
- yday: u32;
- isdst: u32;
+ sec: i32;
+ min: i32;
+ hour: i32;
+ mday: i32;
+ mon: i32;
+ year: i32;
+ wday: i32;
+ yday: i32;
+ isdst: i32;
}
localtime :: __time_localtime
return buf[0..len];
}
-strptime :: (buf: [] u8, format: [] u8, tm: ^Timestamp) -> bool {
- f := cast(cstr) core.alloc.from_stack(format.length + 1);
- core.memory.copy(f, format.data, format.length);
- f[format.length] = 0;
+strptime :: (buf_: [] u8, format_: [] u8, tm: ^Timestamp) -> bool {
+ use core
+
+ #persist weekdays := str.[ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ];
+ #persist monthnames := str.[ "january", "february", "march", "april", "may", "june", "july", "august", "september", "october", "november", "december" ];
+
+ buf := buf_;
+ format := format_;
+
+ working := true;
+ while working && buf.length > 0 && format.length > 0 {
+ c := format[0];
+ switch c {
+ case #char "%" {
+ string.advance(^format);
+ switch format[0] {
+ case #char "a", #char "A" {
+ for i: weekdays.count {
+ w := weekdays[i];
+ if string.equal_insensitive(w, buf[0 .. w.length]) {
+ string.advance(^buf, w.length);
+ tm.wday = i;
+ break break;
+
+ } elseif string.equal_insensitive(w[0 .. 3], buf[0 .. 3]) {
+ string.advance(^buf, 3);
+ tm.wday = i;
+ break break;
+ }
+ }
+
+ tm.wday = -1;
+ working = false;
+ }
+
+ case #char "b", #char "B", #char "h" {
+ for i: monthnames.count {
+ m := monthnames[i];
+ if string.equal_insensitive(m, buf[0 .. m.length]) {
+ string.advance(^buf, m.length);
+ tm.mon = i;
+ break break;
+
+ } elseif string.equal_insensitive(m[0 .. 3], buf[0 .. 3]) {
+ string.advance(^buf, 3);
+ tm.mon = i;
+ break break;
+ }
+ }
+
+ tm.mon = -1;
+ working = false;
+ }
+
+ case #char "d", #char "e" {
+ working = parse_number_and_advance(^buf, ^tm.mday, 1, 31, 0);
+ }
+
+ case #char "D" {
+ working = parse_number_and_advance(^buf, ^tm.mon, 1, 12, -1);
+ if !working do break;
+
+ if buf[0] == #char "/" {
+ string.advance(^buf);
+ working = parse_number_and_advance(^buf, ^tm.mday, 1, 31, 0);
+ if !working do break;
+
+ if buf[0] == #char "/" {
+ string.advance(^buf);
+ working = parse_number_and_advance(^buf, ^tm.year, 0, 99, 0);
+ if working && tm.year < 69 {
+ tm.year += 100;
+ }
+ }
+ }
+ }
+
+ case #char "H" do working = parse_number_and_advance(^buf, ^tm.hour, 0, 23, 0);
+ case #char "I" do working = parse_number_and_advance(^buf, ^tm.hour, 1, 12, 0);
+ case #char "j" do working = parse_number_and_advance(^buf, ^tm.yday, 1, 366, -1);
+ case #char "m" do working = parse_number_and_advance(^buf, ^tm.mon, 1, 12, -1);
+ case #char "M" do working = parse_number_and_advance(^buf, ^tm.min, 0, 59, 0);
+ case #char "n", #char "t" do string.strip_leading_whitespace(^buf);
+
+ case #char "p" {
+ if string.equal_insensitive(buf[0 .. 2], "am") {
+ if tm.hour == 12 do tm.hour = 0;
+ string.advance(^buf, 2);
+
+ } elseif string.equal_insensitive(buf[0 .. 2], "pm") {
+ if tm.hour < 12 do tm.hour += 12;
+ string.advance(^buf, 2);
+
+ } else {
+ working = false;
+ }
+ }
+
+ case #char "r" {
+ working = parse_number_and_advance(^buf, ^tm.hour, 1, 12, 0);
+ if !working do break;
+
+ if buf[0] == #char ":" {
+ string.advance(^buf);
+
+ working = parse_number_and_advance(^buf, ^tm.min, 0, 59, 0);
+ if !working do break;
+
+ if buf[0] == #char ":" {
+ string.advance(^buf);
+
+ working = parse_number_and_advance(^buf, ^tm.sec, 0, 59, 0);
+ if !working do break;
+
+ string.strip_leading_whitespace(^buf);
+
+ if string.equal_insensitive(buf[0 .. 2], "am") {
+ if tm.hour == 12 do tm.hour = 0;
+ string.advance(^buf, 2);
+
+ } elseif string.equal_insensitive(buf[0 .. 2], "pm") {
+ if tm.hour < 12 do tm.hour += 12;
+ string.advance(^buf, 2);
+
+ } else {
+ working = false;
+ }
+ }
+ }
+ }
- return __time_strptime(buf, f, tm);
+ case #char "R" {
+ working = parse_number_and_advance(^buf, ^tm.hour, 1, 12, 0);
+ if !working do break;
+
+ if buf[0] == #char ":" {
+ string.advance(^buf);
+
+ working = parse_number_and_advance(^buf, ^tm.min, 0, 59, 0);
+ }
+ }
+
+ case #char "S" do working = parse_number_and_advance(^buf, ^tm.sec, 0, 59, 0);
+
+ case #char "T" {
+ working = parse_number_and_advance(^buf, ^tm.hour, 1, 12, 0);
+ if !working do break;
+
+ if buf[0] == #char ":" {
+ string.advance(^buf);
+
+ working = parse_number_and_advance(^buf, ^tm.min, 0, 59, 0);
+ if !working do break;
+
+ if buf[0] == #char ":" {
+ string.advance(^buf);
+
+ working = parse_number_and_advance(^buf, ^tm.sec, 0, 59, 0);
+ }
+ }
+ }
+
+ case #char "w" do working = parse_number_and_advance(^buf, ^tm.wday, 0, 6, 0);
+ case #char "Y" do working = parse_number_and_advance(^buf, ^tm.year, 1900, 65535, -1900);
+
+ case #char "y" {
+ working = parse_number_and_advance(^buf, ^tm.year, 0, 99, 0);
+ if working && tm.year < 69 {
+ tm.year += 100;
+ }
+ }
+
+ case #char "%" {
+ if buf[0] != #char "%" {
+ working = false;
+ }
+ string.advance(^buf);
+ }
+
+ case #default {
+ working = false;
+ }
+ }
+ }
+
+ case #char " ", #char "\t", #char "\r", #char "\n", #char "\f", #char "\v" {
+ string.strip_leading_whitespace(^buf);
+ }
+
+ case #default {
+ if c != buf[0] {
+ working = false;
+
+ } else {
+ string.advance(^buf);
+ }
+ }
+ }
+
+ string.advance(^format);
+ }
+
+ return working;
}
+#local
+parse_number_and_advance :: (buf: ^[] u8, result: ^i32, low, high, offset: i32) -> bool {
+ use core {string}
+
+ n := 0;
+ while buf.count > 0 {
+ c := buf.data[0];
+ if c < #char "0" || c > #char "9" {
+ break;
+ }
+
+ n *= 10;
+ n += ~~(c - #char "0");
+ string.advance(buf);
+ }
+
+ if n >= low && n <= high {
+ *result = n + offset;
+ return true;
+ }
+
+ return false;
+}
+
+
#local {
#foreign "onyx_runtime" {
__time_localtime :: (time: u64, tm: ^Timestamp) -> void ---
__time_gmtime :: (time: u64, tm: ^Timestamp) -> void ---
__time_strftime :: (buf: [] u8, format: cstr, tm: ^Timestamp) -> u32 ---
- __time_strptime :: (buf: [] u8, format: cstr, tm: ^Timestamp) -> bool ---
}
}
projects / onyx.git / commitdiff